Long-tailed Blue Butterfly / Pea Blue Lampides boeticus

Long-tailed Blue butterfly
faded Long-tailed Blue
The Long-tailed Blue butterfly can be distinguished from Lang's Short-tailed Blue by the broad white streak near the border of the underside wings. The Long-tailed Blue above left still has its long tails and "eye-spots" but the faded one above right has lost its long tail (to a bird or to wear and tear).
Long-tailed Blue butterfly
Long-tailed Blue butterfly
Long-tailed Blue butterfly
Long-tailed Blue butterfly
The butterfly is native to (warm) parts of Eurasia and parts of Africa and Australasia.